History

The 4th Marine Division is a reserve division in the United States Marine Corps. It was raised in 1943 for service during World War II, and subsequently fought in the Pacific against the Japanese.

After intensive training, it shipped out on 13 January 1944, and in 13 months made four major amphibious assaults, in the battles of Kwajalein (Roi-Namur), Saipan, Tinian and Iwo Jima under command of V Amphibious Corps, under its command and control were the first Joint Assault Signal Company, suffering more than 17,000 casualties. It was awarded two Presidential Unit Citations and a Navy Unit Commendation, and then inactivated 28 November 1945.
CampaignMissionCampaignMission
Operation FlintlockEastern NamurOperation FlintlockClearing the Pocket
Operation FlintlockNorthern DefensesOperation FlintlockAirfield Assault
Operation FlintlockRoi-Namur: Roi's PerimeterOperation FlintlockHolding the Line
Operation FlintlockLanding at Namur